DE102007022808A1 - Internal-combustion engine e.g. petrol engine, operating method for motor vehicle, involves injecting fuel type in amount to achieve explosive mixture at operating point of engine, where point is available for time of injection - Google Patents
Internal-combustion engine e.g. petrol engine, operating method for motor vehicle, involves injecting fuel type in amount to achieve explosive mixture at operating point of engine, where point is available for time of injection Download PDFInfo
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- DE102007022808A1 DE102007022808A1 DE102007022808A DE102007022808A DE102007022808A1 DE 102007022808 A1 DE102007022808 A1 DE 102007022808A1 DE 102007022808 A DE102007022808 A DE 102007022808A DE 102007022808 A DE102007022808 A DE 102007022808A DE 102007022808 A1 DE102007022808 A1 DE 102007022808A1
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-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0678—Unconventional, complex or non-rotationally symmetrical shapes of the combustion space, e.g. flower like, having special shapes related to the orientation of the fuel spray jets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B23/104—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector being placed on a side position of the cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0602—Control of components of the fuel supply system
- F02D19/0607—Control of components of the fuel supply system to adjust the fuel mass or volume flow
- F02D19/061—Control of components of the fuel supply system to adjust the fuel mass or volume flow by controlling fuel injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
- F02D19/0642—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
- F02D19/0647—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0686—Injectors
- F02D19/0689—Injectors for in-cylinder direct injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
- F02D19/081—Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
- F02D41/3023—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the stratified charge spark-ignited mode
- F02D41/3029—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the stratified charge spark-ignited mode further comprising a homogeneous charge spark-ignited mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
- F02D19/082—Premixed fuels, i.e. emulsions or blends
- F02D19/084—Blends of gasoline and alcohols, e.g. E85
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Betreiben einer Brennkraftmaschine in Form eines Ottomotors oder Dieselmotors, insbesondere eines Kraftfahrzeugs, wobei ein erster Kraftstofftyp mittels wenigstens eines Kraftstoffinjektors direkt in wenigstens einen Brennraum der Brennkraftmaschine eingespritzt wird und wobei wahlweise zusätzlich zum Einspritzen des ersten Kraftstofftyps ein zweiter Kraftstofftyp über wenigstens einen Saugrohr-Injektor in ein Saugrohr der Brennkraftmaschine eingespritzt wird, wobei während eines Arbeitszyklus zuerst der zweite Kraftstofftyp eingespritzt und in den Brennraum angesaugt wird, so dass im Brennraum ein homogenes Gemisch des zweiten Kraftstofftyps vorliegt, und anschließend der erste Kraftstofftyp in den Brennraum eingespritzt wird, so dass im Brennraum der erste Kraftstofftyp geschichtet vorliegt, gemäß dem Oberbegriff des Patentanspruchs 1.The The invention relates to a method for operating an internal combustion engine in the form of a gasoline engine or diesel engine, in particular a motor vehicle, wherein a first fuel type by means of at least one fuel injector injected directly into at least one combustion chamber of the internal combustion engine and optionally optionally in addition to injecting the first fuel type a second fuel type over at least injecting an intake manifold injector into an intake manifold of the internal combustion engine, wherein during a work cycle first the second fuel type injected and sucked into the combustion chamber, leaving in the combustion chamber a homogeneous mixture of the second fuel type is present, and then the first fuel type is injected into the combustion chamber, so that the first fuel type is stratified in the combustion chamber, according to Preamble of claim 1.
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Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der o. g. Art zur Verfügung zu stellen, bei dem sich Verbesserungen hinsichtlich Kraftstoffverbrauch und Abgasemissionen ergeben.Of the Invention is based on the object, a method of o. G. kind to make available improvements in terms of Fuel consumption and exhaust emissions result.
Diese Aufgabe wird erfindungsgemäß durch ein Verfahren der o. g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen beschrieben.These The object is achieved by a method the o. g. Art solved with the features characterized in claim 1. Advantageous embodiments of the invention are in the other Claims described.
Dazu ist es bei einem Verfahren der o. g. Art erfindungsgemäß vorgesehen, dass der zweite Kraftstofftyp derart eingespritzt wird, dass das homogene Gemisch des zweiten Kraftstofftyps als mageres, brennfähiges Gemisch vorliegt und dass der erste Kraftstofftyp wenigstens in einer Menge eingespritzt wird, die mindestens notwendig ist, um an dem zum Zeitpunkt der Einspritzung vorliegenden Betriebspunkt der Brennkraftmaschine ein zündfähiges Gemisch zu erreichen.To it is in a method of o. g. Art provided according to the invention, that the second fuel type is injected so that the homogeneous mixture of the second fuel type as a lean, combustible Mixture is present and that the first fuel type at least in a quantity that is at least necessary to at the operating point present at the time of injection the internal combustion engine an ignitable mixture to reach.
Dies hat den Vorteil, dass ein Kraftstoffverbrauch sowie eine Schadstoffemission der Brennkraftmaschine reduziert ist.This has the advantage that a fuel consumption as well as a pollutant emission the internal combustion engine is reduced.
Zweckmäßigerweise umfasst der erste Kraftstofftyp einen Flüssigkraftstoff, insbesondere Diesel- oder Ottokraftstoff, insbesondere Benzin und/oder Ethanol (E85), oder ein Mischung von zwei oder mehr der vorgenannten Kraftstofftypen.Conveniently, the first fuel type comprises a liquid fuel, in particular diesel or petrol, in particular gasoline and / or ethanol (E85), or a mixture of two or more of the aforementioned types of fuels.
Bevorzugt umfasst der zweite Kraftstofftyp Benzin, Ethanol, Methanol oder ein Gas, insbesondere CNG (Compressed Natural Gas), LPG (Liquified Petroleum Gas), Biogas und/oder Wasserstoff, oder ein Mischung von zwei oder mehr der vorgenannten Kraftstofftypen umfasst.Prefers The second type of fuel includes gasoline, ethanol, methanol or a gas, in particular CNG (Compressed Natural Gas), LPG (Liquified Petroleum Gas), biogas and / or hydrogen, or a mixture of two or more includes more of the aforementioned fuel types.
Das magere homogene Gemisch des zweiten Kraftstofftyps weist bevorzugt einen Lambdawert von 1,3 bis 4, insbesondere 1,5 oder 1,8 oder 2,5 auf.The lean homogeneous mixture of the second fuel type is preferred a lambda value of 1.3 to 4, in particular 1.5 or 1.8 or 2.5 on.
Zweckmäßigerweise wird der erste Kraftstofftyp in einer Menge eingespritzt, die dem 1,3-fachen, 1,5-fachen oder 2-fachen der Menge entspricht, die zum Erreichen eines zündfähigen Gemisches an dem zum Zeitpunkt der Einspritzung vorliegenden Betriebspunkt der Brennkraftmaschine notwendig ist.Conveniently, the first type of fuel is injected in an amount 1.3 times, 1.5 times or 2 times the amount necessary to achieve an ignitable mixture Is necessary to the present at the time of injection operating point of the internal combustion engine is necessary.
In einer bevorzugten Ausführungsform wird dieses Verfahren nur bei vorbestimmten Betriebspunkten der Brennkraftmaschine ausgeführt, so beispielsweise bei einer Mindestdrehzahl der Brennkraftmaschine von 700 U/min bis 2.000 U/min, insbesondere 900 U/min, 1.200 U/min oder 1.500 U/min; bei einem minimalen effektiven Mitteldruck pme von 0 bar bis 2 bar, insbesondere 0,5 bar, 1 bar oder 1,5 bar; bei einer Maximaldrehzahl der Brennkraftmaschine von 2.500 U/min bis 5.000 U/min, insbesondere 3.000 U/min, 3.500 U/min oder 4.000 U/min; bei einem maximalen effektiven Mitteldruck pme von 2,5 bar bis 20 bar, insbesondere 3 bar, 4 bar, 5 bar, 6 bar, 8 bar, 10 oder 15 bar; und/oder bei einer Kühlmitteltemperatur von 20°C bis 90°C, insbesondere 30°C, 40°C, 50°C, 60°C, 70°C oder 80°C.In a preferred embodiment, this method is carried out only at predetermined operating points of the internal combustion engine, for example at a minimum engine speed of 700 rpm to 2,000 rpm, in particular 900 rpm, 1,200 rpm or 1,500 rpm; at a minimum effective mean pressure p me from 0 bar to 2 bar, in particular 0.5 bar, 1 bar or 1.5 bar; at a maximum engine speed of 2,500 rpm to 5,000 rpm, in particular 3,000 rpm, 3,500 rpm or 4,000 rpm; at a maximum effective mean pressure p me of 2.5 bar to 20 bar, in particular 3 bar, 4 bar, 5 bar, 6 bar, 8 bar, 10 or 15 bar; and / or at a coolant temperature of 20 ° C to 90 ° C, in particular 30 ° C, 40 ° C, 50 ° C, 60 ° C, 70 ° C or 80 ° C.
Nach Erreichen eines für das vorliegende Verfahren zugelassenen Betriebpunktes der Brennkraftmaschine, wird bevorzugt die Ausführung des vorliegenden Verfahrens um eine vorbestimmte Totzeit verzögert, wobei diese vorbestimmte Totzeit eine Zeitspanne von 1 Sekunde bis 1.000 Sekunden, insbesondere 10 Sekunden, 50 Sekunden, 100 Sekunden oder 250 Sekunden, umfasst.To Achieve an approved for the present process Operating point of the internal combustion engine, the execution is preferred delayed by a predetermined dead time of the present method, this predetermined dead time is a period of 1 second to 1,000 seconds, especially 10 seconds, 50 seconds, 100 seconds or 250 seconds.
In einer besonders bevorzugten Ausführungsform wird die Menge von erstem und zweitem Kraftstofftyp derart bemessen, dass ein Lambdawert des gesamten Gemisches aus erstem und zweitem Kraftstofftyp 1,00 ± 3% oder ≫ 1 beträgt.In In a particularly preferred embodiment, the amount of the first and second fuel types such that a lambda value of the Total mixture of first and second fuel types 1.00 ± 3% or »1.
Die Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Diese zeigt in der einzigen Fig. eine schematische Schnittansicht eines Brennraums einer Brennkraftmaschine mit einer Gemischverteilung in einem Brennraum bei erfindungsgemäß ausgeführtem Verfahren.The The invention will be explained in more detail below with reference to the drawing explained. This shows in the only Fig. A schematic Sectional view of a combustion chamber of an internal combustion engine with a Mixture distribution in a combustion chamber in accordance with the invention Method.
In
der einzigen Fig. ist eine Gemischverteilung in einem Brennraum
Bevorzugt bei nicht-monovalenten Gas-Ottomotoren mit Benzindirekteinspritzung ist im Teillastbetrieb folgende erfindungsgemäße Betriebsweise vorgesehen:
- – Im Ansaugtakt
wird über Saugrohr-Injektoren ein homogenes Gemisch
16 im Brennraum10 erzeugt und angesaugt. Dieses Gemisch ist vorzugsweise mager, vorzugsweise mit Lambda > 1,3; 1,5; 1,8; 2,5; 4. Das Gemisch ist brennfähig, aber nicht notwendigerweise zündfähig. Bevorzugt kommt hier Erdgas (CNG) zum Einsatz. - – Über die Direkteinspritzung, z. B. mit zentraler Lage
des Injektors
20 und benachbarter Zündkerze22 oder mit seitlicher Lage des Injektor20 und Kolbenmulde, erfolgt zusätzlich im Verdichtungstakt eine Flüssigkraftstoff-Schichteinspritzung, die an der Zündkerze22 ein zündfähiges Gemisch18 erzeugt. Bevorzugt kommt hier Benzin zum Einsatz. - – Nach der Zündung erfasst der Brennverlauf
zunächst die Gas-Benzin-Wolke
18 im Zündkerzenbereich und brennt anschließend durch den gesamten Brennraum10 .
- - In the intake stroke is via intake manifold injectors a homogeneous mixture
16 in the combustion chamber10 produced and sucked. This mixture is preferably lean, preferably with lambda>1.3;1.5;1.8;2.5; 4. The mixture is flammable, but not necessarily flammable. Preference is given here natural gas (CNG) is used. - - About the direct injection, z. B. with central location of the injector
20 and adjacent spark plug22 or with lateral position of the injector20 and piston recess, is additionally carried out in the compression stroke, a liquid fuel stratified injection, which at the spark plug22 an ignitable mixture18 generated. Preferably here comes gasoline used. - - After ignition, the combustion process first detects the gas-gasoline cloud
18 in the spark plug area and then burns through the entire combustion chamber10 ,
Bevorzugt wird stets nur die Minimalmenge an Benzin zum Erreichen eines zündfähigen Gemisches eingesetzt, maximal Faktor 2; 1,5 oder 1,3 dieser betriebspunktabhängigen Minimalmenge.Prefers is always only the minimum amount of gasoline to reach an ignitable Used mixture, maximum factor 2; 1.5 or 1.3 of these operating point dependent Minimum amount.
Bevorzugt erfolgt diese Betriebsweise im Last-Drehzahlbereich von minimal 700, 900, 1.200, 1.500, 2.000 U/min; einem minimalen effektiven Mitteldruck pme von 0; 0,5; 1; 1,5; 2 bar, einer maximal Drehzahl von 2.500, 3.000, 3.500, 4.000, 5.000 U/min und/oder einem maximalen Druck pme von 2,5; 3; 4; 5; 6; 8; 10; 15; 20 bar.This mode of operation preferably takes place in the load speed range of at least 700, 900, 1,200, 1,500, 2,000 rpm; a minimum effective mean pressure p me of 0; 0.5; 1; 1.5; 2 bar, a maximum speed of 2,500, 3,000, 3,500, 4,000, 5,000 rpm and / or a maximum pressure p me of 2.5; 3; 4; 5; 6; 8th; 10; 15; 20 bar.
Bevorzugt wird diese Betriebsweise oberhalb einer Kühlmitteltemperatur von 20, 30, 40, 50, 60, 70, 80, 90°C eingesetzt, evtl. nach einer Totzeit von 1, 10, 50, 100, 250, 1.000 Sekunden.Prefers this mode of operation is above a coolant temperature from 20, 30, 40, 50, 60, 70, 80, 90 ° C used, possibly. after a dead time of 1, 10, 50, 100, 250, 1,000 seconds.
Das
Gesamtgemisch (Benzin
Betriebsbereich und Lambdawert werden so eingestellt, dass ein Fahrzeug, welches im NEFZ betrieben wird, weniger als 50, 30, 25, 20, 15, 10, 5% der gemäß Schadstoffnorm EU IV zulässigen NOx-Emissionen (< 80 mg/km = < 880 mg/Test) als NOx-Rohemissionen während der erfindungsgemäßen Betriebsweise erzeugt. Dies bedeutet NOx-abgasnachbehandlungsfreier Magerbetrieb.Operating range and lambda value can be set so that a vehicle that is operated in the NEDC, less than 50, 30, 25, 20, 15, 10, 5% of the permissible according emission standard EU IV NOx emissions (<80 mg / km = <880 mg / test) as NO x crude emissions generated during the operation of the invention. This means NO x exhaust aftertreatment-free lean operation.
Aufgrund der niedrigen Abgasenthalpie wird diese Betriebsweise bevorzugt bei Saugmotoren oder bei Motoren mit zumindest zeitweise eingesetzter mechanischer oder Druckwellen-Aufladung eingesetzt. Diese Aufladung kann durch eine Abgasturboaufladung ergänzt oder, unterstützt werden.Due to the low exhaust gas enthalpy, this mode of operation is preferably used in naturally aspirated engines or in engines with at least temporary use used mechanical or pressure wave charging. This charge can be supplemented or supported by an exhaust turbocharger.
Das Verfahren bezieht sich bevorzugt auf die Verwendung von mehr als einem Grundkraftstoff. Generell können folgende Kraftstoffe in beliebiger Kombination zum Einsatz kommen:
- – Saugrohr-Einspritzung oder Einblasung: Erdgas/Biogas, LPG, Wasserstoff, Benzin und Methanol oder Ethanol in beliebiger Mischung von 0 bis 100%.
- – Direkteinspritzung mit zentraler oder seitlicher Injektorlage oder in Vorkammer/Wirbelkammer: LPG, Benzin und Methanol oder Ethanol in beliebiger Mischung von 0 bis 100%.
- – Direkteinblasung mit zentraler Injektorlage oder in Vorkammer/Wirbelkammer: Wasserstoff, Erdgas/Biogas
- - Intake manifold injection or injection: natural gas / biogas, LPG, hydrogen, gasoline and methanol or ethanol in any mixture from 0 to 100%.
- - Direct injection with central or lateral injector position or in antechamber / vortex chamber: LPG, gasoline and methanol or ethanol in any mixture from 0 to 100%.
- - Direct injection with central injector position or in antechamber / vortex chamber: hydrogen, natural gas / biogas
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102004062019 A1 [0002] - DE 102004062019 A1 [0002]
- - DE 10245161 A1 [0003] DE 10245161 A1 [0003]
- - US 2001/0003977 A1 [0004] US 2001/0003977 A1 [0004]
- - US 2005/0028791 A1 [0005] US 2005/0028791 A1 [0005]
Claims (13)
Priority Applications (1)
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DE102007022808A DE102007022808A1 (en) | 2007-05-15 | 2007-05-15 | Internal-combustion engine e.g. petrol engine, operating method for motor vehicle, involves injecting fuel type in amount to achieve explosive mixture at operating point of engine, where point is available for time of injection |
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DE102007022808A DE102007022808A1 (en) | 2007-05-15 | 2007-05-15 | Internal-combustion engine e.g. petrol engine, operating method for motor vehicle, involves injecting fuel type in amount to achieve explosive mixture at operating point of engine, where point is available for time of injection |
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Cited By (2)
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WO2012107334A1 (en) * | 2011-02-07 | 2012-08-16 | Robert Bosch Gmbh | Method and device for the dynamic pilot control of a fuel-air mixture for an internal combustion engine |
DE102013021242A1 (en) * | 2013-12-13 | 2015-06-18 | Daimler Ag | Otto engine for a motor vehicle and method for operating such a gasoline engine |
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US20010003977A1 (en) | 1999-12-13 | 2001-06-21 | Kenji Hayashi | Fuel injection system for internal combustion engines and its method of control |
DE10245161A1 (en) | 2002-09-26 | 2004-04-08 | Winkelmann, Karlheinrich, Dipl.-Ing. (TH) | Fuel injection system for combustion engine regulates additional fuel (e.g. LPG) fed to combustion chamber with lambda probe in exhaust flow upstream of catalyser and associated control electronics |
US20050028791A1 (en) | 2003-08-07 | 2005-02-10 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
EP1559886A2 (en) * | 2000-02-11 | 2005-08-03 | Westport Research Inc. | Method and apparatus for gaseous fuel introduction and controlling combustion in an internal combustion engine |
DE102004062019A1 (en) | 2004-12-23 | 2006-07-13 | Robert Bosch Gmbh | Fuel injection for an IC motor using a liquid and a gas fuel, with separate fuel injectors, has a programmed injection timing and duration for each fuel in the compression stroke |
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US20010003977A1 (en) | 1999-12-13 | 2001-06-21 | Kenji Hayashi | Fuel injection system for internal combustion engines and its method of control |
EP1559886A2 (en) * | 2000-02-11 | 2005-08-03 | Westport Research Inc. | Method and apparatus for gaseous fuel introduction and controlling combustion in an internal combustion engine |
DE10245161A1 (en) | 2002-09-26 | 2004-04-08 | Winkelmann, Karlheinrich, Dipl.-Ing. (TH) | Fuel injection system for combustion engine regulates additional fuel (e.g. LPG) fed to combustion chamber with lambda probe in exhaust flow upstream of catalyser and associated control electronics |
US20050028791A1 (en) | 2003-08-07 | 2005-02-10 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
DE102004062019A1 (en) | 2004-12-23 | 2006-07-13 | Robert Bosch Gmbh | Fuel injection for an IC motor using a liquid and a gas fuel, with separate fuel injectors, has a programmed injection timing and duration for each fuel in the compression stroke |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2012107334A1 (en) * | 2011-02-07 | 2012-08-16 | Robert Bosch Gmbh | Method and device for the dynamic pilot control of a fuel-air mixture for an internal combustion engine |
DE102013021242A1 (en) * | 2013-12-13 | 2015-06-18 | Daimler Ag | Otto engine for a motor vehicle and method for operating such a gasoline engine |
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